I would only disagree with that article from the point of view that it doesn't take into account, anything about the differences in culture. I think the use of the gun appalled the samurai. Their swords didn't count for much anymore. They didn't want them around. But hidden in that culture tidbit is the fact that the peasantry from that far back, weren't allowed to have weapons. But certainly, as you and others have said, a country's culture is its own; to live with or change without outside interference.